Speaker Ferrite Magnet with high performance

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Basic Info.
  • Application: Speaker Magnet 
  • Type: Permanent 
  • Composite: Ferrite Magnet 
  • Brand Name: LG 
  • Coating:: No Plating 
  • Shape:: Coil,Arc, ring, block 
  • Export Markets:: Global 
  • certificate: IS09001 
  • Color: according to your request 
  • size: custom-made 
  • Performance: Y30 
  • Delivery detailes: 15-25days 
  • Model No.: NingBoLG024 
  • Place of Origin: Zhejiang  
  • Min.Order: 5000 Piece/Pieces
  • Means of Transport: Ocean, Air, Land
Supply Capacity
  • Production Capacity: 2000tons yearly
  • Packing:According to customers request
  • Delivery Date: According to quantity

product name Speaker Ferrite Magnet with high performance

Since being founded in 2001, Ningbo LG Magnetics Manufacturing Co., Ltd. has been specialized in R&D and production of sintered 1:5, 2:17 Samarium Cobalt permanent magnets, sintered Ndfeb, Ferrite magnet and assemblies. Through 12 years' great-leap-forward development, now Ningbo LG is a company, which covers an area of 12000 square meters including an area of 5000sm of factory building, with an annual production capacity of 1200 tons of SmCo and 1000 tons of NdFeB products. It brought in advanced producing, machining and testing equipments and the fixed asset values more than RMB 32 million.
In past seven years, Ningbo LG had been taking the independent and collaborative innovation as the strategy of technology innovation. LG strengthened the ability of independent innovation by increasing the inputs on technical innovation, bringing in high level technology talents and combining the market demands. What's more, through the cooperation with the research institutions such as The Chinese Academy of Sciences, Ningbo Materials Technology and Engineering Institute, etc, LG improved the ability of researching and developing high-end products.

Ceramic, also known as ferrite, magnets are made of a composite of iron oxide and barium carbonate (BaCo3) or strontium carbonate (SrCO3). 
Widely available since the 1950's, this material is commonly available and at a lower cost than other types of materials used in permanet magnets.Ceramic magnets are made using pressing and sintering. Sintered magents are a type of ceramic composed of the compressed powder of the alloy material being used.Sintering involves the compaction of fine alloy powder in a die and then fusing the powder into a solid material with heat. While the sintered magets are solid ,their physical properties are more similar to a seramic and are easily broken and chipped.


Ceramic magents are brittle and hard generally requiriing diamond wheels to grind and shape.
These magnets come in a number of different grades. Ceramic-1 is an isotropic grade with equal magnetic properties in all directions.
Ceramic grades 5 and 8 are anisotropic grades. Ansotropic magents are magnetized in the direction of pressing.The anisotropic method delivers the highest energy product among ceramic magnets at values up to 3.5 MGOe ( Mega Gauss Oersted). Ceramic magnets have a good 
balance of magnetic strength, resistance to demagnetizing and economy. They are the most wide used magents today.


Beneficial characteristics of ceramic magnets include their low cost, high coercive force, resistance to corrosion, and high heat tolerance. Drawbacks include their low energy product or "strengh", low mechanical strengh, and the ferrite poweder on the surface of the material which can rub of and cause soiling.

1.Material: ferrites ,Strontium,etc.

2.Grade: Y25,Y30,Y30BH,etc.

3.Size: It will be different according to client's requirement;

4.Shape: Arc,Tile,Block,Bar,Ring,Cube, Rectangular or others.

5.Application:Widely used in ammeter,speaker,audio,phone,TV,dynamo,etc.


1.Cheapest magnet material
2. Good anti-corrosion performance, no surface treatment needed
3.Excellent temperature stability
4.Compact crystal
5.Could provide isotropic and anisotrpic

Two manufacturing Process
1.Dry process: By dry process, can produce isotropic & anisotropic magnets;the tool can be changed and developed easily.
2.Wet process: By wet process, only anisotropic magnets can be produced;it is complicated to change the tool and the tooling charge is much higher

1.Isotropic ferrite magnets are not oriented and can be magnetized in any direction;
2.Anisotropic ferrite magnets are different, they are all oriented in the manufacturing direction, and should be magnetized in the direction of orientation.



   1. Least expensive material compared to alnico and rare earth magnets
   2. High intrinsic coercive force
   3. Available in simple shapes only due to manufacturing process
   4. Lower service temperature than alnico, greater than rare earth
   5. Finishing requires diamond cutting or grinding wheel
   6. Lower energy product than alnico and rare earth magnets
   7. Most common grades of ceramic are 1, 5 and 8 (1-8 possible)
   8. Grade 8 is the strongest ceramic material available
   9. Tooling can be expensive



All available shipping ways could be applied, by courier, by air or by sea.

Appointed shipping company or our own forwarders all could be used in shipment.

Full-way tracking the goods for you before the goods arrive.


Buyer Guide

In order to quote you the best price quickly, please provide the following information:

1.Product size,grade,etc.

2.Order quantity;

3.Attached the drawings if customized
4.Any special packing or other requirements

Shipping & Payment


1 piece as sample

Sample policy

sample fee accordingly and freight paid by customers.

sample lead time

within 5 days by DHL

packing details

anti-magnetism packing

bulk manufacture time

8-10 days

deliver time

within 5 days by DHL

within 20 days by Sea

payment terms

FOB Yiwu/Shanghai/Ningbo. TT, western union, Paypal(credit, mastercard), Escrow, etc.

All of the Ferrite Magent has a 8% DISCOUNT. 

Price is very competitive, any interest, pls feel  free to contact us.

 Contact person: Candy

eMail: candy@nb-lg.com

mobile: 0086-15967873267

 Tel: 0086- 0574-88193097

Fax: 0086-0574-88193259

skype:  lisinan117                     Welcome to inquiry!

Send message to this supplier
Ms. Flora. Han (sales manager)
Tel: 86-574-88193097
Mobile: 18606615061
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Contact Method
Ningbo LG Manufacturing Co., Ltd.
No. 191-A, Xinzhuang Road, Gaoqiao Town, Yinzhou District, Ningbo, Zhejiang, China (Mainland)
Fax: 86-574-88193259
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